Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 1093 228 21% 0.01 261 169 65% 6.2
10 Kinds of People 2108 460 22% 0.01 377 253 67% 5.4
2048 2361 1191 50% 0.00 1189 1030 87% 2.0
3D Printer 76 22 29% 0.00 28 19 68% 6.8
3-Sided Dice 525 37 7% 0.00 99 32 32% 8.6
4 thought 1849 653 35% 0.00 667 557 84% 2.6
A1 Paper 1329 393 30% 0.00 408 313 77% 3.9
Aaah! 7961 3903 49% 0.00 3259 3048 94% 1.4
ABC 355 179 50% 0.00 190 169 89% 1.9
A+B Problem 1414 176 12% 0.06 238 97 41% 8.1
Absurdistan Roads II 337 139 41% 0.00 122 84 69% 6.1
Absurdistan Roads III 783 208 27% 0.04 192 140 73% 5.7
A Classy Problem 1867 554 30% 0.02 494 404 82% 3.6
ACM Contest Scoring 1906 1168 61% 0.00 1047 995 95% 1.3
Adding Words 2294 446 19% 0.00 546 373 68% 4.5
A Different List Game 3143 217 7% 0.00 349 57 16% 9.2
A Different Problem 9224 3831 42% 0.00 3537 3085 87% 2.1
Adjoin the Networks 639 195 31% 0.00 172 127 74% 6.1
Administrative Difficulties 317 75 24% 0.05 87 59 68% 4.9
Adventures in Moving -- Part IV 313 94 30% 0.00 98 80 82% 5.0
A Feast For Cats 498 165 33% 0.56 130 106 82% 4.5
Air Conditioned Minions 1339 371 28% 0.00 420 304 72% 4.2
Airline Hub 867 166 19% 0.01 172 103 60% 5.9
Airport Logistics 26 5 19% 0.00 7 5 71% 6.1
Airports 64 24 38% 0.23 21 14 67% 7.1
Akcija 947 428 45% 0.01 392 344 88% 2.1
Aladin 578 47 8% 0.17 81 12 15% 9.0
Alchemy 23 5 22% 0.03 13 5 38% 7.5
Alea iacta est 20 10 50% 0.47 9 9 100% 4.6
Alien Numbers 707 372 53% 0.00 362 337 93% 1.7
A List Game 2535 713 28% 0.00 697 575 82% 3.1
All about that base 1447 515 36% 0.00 566 465 82% 2.8
All Different Directions 189 100 53% 0.00 102 89 87% 3.2
All Friends 393 72 18% 0.01 56 34 61% 8.3
All Just A Dream 435 93 21% 0.19 78 56 72% 5.9
All Pairs Shortest Path 1784 316 18% 0.04 231 144 62% 6.6
Almost Perfect 1419 327 23% 0.00 359 274 76% 3.2
Almost Union-Find 2389 287 12% 0.03 390 164 42% 8.0
Alphabet Spam 2105 1385 66% 0.00 868 834 96% 1.4
Alternative Bracket Notation 134 57 43% 0.00 61 51 84% 5.8
Amalgamated Artichokes 1910 846 44% 0.01 749 663 89% 2.2
Amanda Lounges 611 133 22% 0.07 145 102 70% 6.3
Amazing Race 173 45 26% 0.54 48 34 71% 6.9
Ambiguous Result 88 25 28% 0.04 34 24 71% 6.9
Anagram Counting 662 275 42% 0.00 278 228 82% 3.0
Andrew the Ant 29 7 24% 0.12 10 7 70% 6.5
Androids 184 58 32% 0.09 65 42 65% 6.1
A New Alphabet 3134 1456 46% 0.00 1435 1327 92% 1.6
Animal Classification 854 157 18% 0.04 173 110 64% 6.8
An Industrial Spy 584 322 55% 0.02 240 211 88% 3.1
Another Brick in the Wall 503 278 55% 0.00 271 245 90% 2.1
Another Candies 2670 719 27% 0.00 745 608 82% 2.7
Another Dice Game 53 37 70% 0.00 33 31 94% 3.7
Antiarithmetic? 447 91 20% 0.18 133 77 58% 6.7
Ants 831 335 40% 0.01 292 248 85% 2.7
Apaxiaaaaaaaaaaaans! 2440 1577 65% 0.00 1460 1403 96% 1.3
Apparatus 421 96 23% 0.01 75 55 73% 5.5
Apples, Cherries, and Mangos 209 65 31% 0.02 59 47 80% 5.9
Aquarium Tank 184 53 29% 0.00 54 41 76% 4.7
Aqueduct Construction 48 10 21% 0.01 13 10 77% 7.1
Arable Area 137 29 21% 0.08 35 19 54% 8.6
A Rational Sequence 438 183 42% 0.00 180 152 84% 3.7
A Rational Sequence 2 174 145 83% 0.00 144 143 99% 1.4
Arbitrage? 259 33 13% 0.11 31 20 65% 6.9
Arcade! 662 111 17% 0.01 112 79 71% 5.2
Arctic Network 584 214 37% 0.02 167 143 86% 3.8
A Real Challenge 1712 823 48% 0.00 795 745 94% 1.5
Area of Effect 78 8 10% 4.74 13 6 46% 7.8
Arithmetic 266 61 23% 0.01 67 47 70% 4.0
Army Strength (Easy) 1174 614 52% 0.00 531 483 91% 1.8
Army Strength (Hard) 1330 644 48% 0.01 455 400 88% 2.4
Around and Around We Go 3 1 33% 0.00 2 1 50% 8.7
Around the Track 157 24 15% 0.00 34 16 47% 8.4
Arranging Hat 77 36 47% 0.10 33 29 88% 4.2
Artur 131 20 15% 0.17 25 15 60% 6.5
Artwork 277 79 29% 0.07 105 61 58% 5.9
A Safe Bet 123 41 33% 0.29 33 28 85% 5.0
ASCII Figure Rotation 613 169 28% 0.00 190 154 81% 4.1
As Easy as CAB 67 21 31% 0.00 25 18 72% 6.3
Aspen Avenue 568 215 38% 0.01 126 93 74% 6.2
Assembly Line 22 9 41% 0.68 10 7 70% 6.4
Assigning Workstations 569 190 33% 0.12 193 152 79% 4.6
Association for Computing Machinery 938 372 40% 0.00 359 312 87% 2.0
Association for Control Over Minds 527 196 37% 0.08 185 161 87% 3.4
Association for Convex Main Office 318 83 26% 0.08 79 66 84% 4.1
Association for Cool Machineries (Part 1) 406 80 20% 0.04 108 72 67% 5.9
Association for Cool Machineries (Part 2) 26 17 65% 0.00 17 15 88% 4.1
Association for the Country of Mububa 943 213 23% 0.00 243 160 66% 5.5
Association of Camera Makers 104 4 4% 10.56 7 4 57% 8.5
Association of Cats and Magical Lights 926 211 23% 0.23 181 142 78% 4.7
Association of Computer Maintenance 638 81 13% 0.04 69 41 59% 7.2
Asteroid Rangers 46 27 59% 0.10 18 17 94% 4.9
Asteroids 362 60 17% 0.00 45 37 82% 4.6
A Towering Problem 545 301 55% 0.00 299 270 90% 1.9
Automatic Trading 201 57 28% 0.05 65 45 69% 3.7
Average Speed 87 27 31% 0.00 25 20 80% 4.1
A Vicious Pikeman (Easy) 602 158 26% 0.00 126 104 83% 4.2
A Vicious Pikeman (Hard) 436 63 14% 0.01 71 41 58% 8.1
Avogadro 95 26 27% 0.04 33 23 70% 6.6
Avoiding the Apocalypse 173 74 43% 0.01 54 49 91% 3.8